CN103459988B - Ultrasonic flow rate measurement device - Google Patents
Ultrasonic flow rate measurement device Download PDFInfo
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- CN103459988B CN103459988B CN201280016739.0A CN201280016739A CN103459988B CN 103459988 B CN103459988 B CN 103459988B CN 201280016739 A CN201280016739 A CN 201280016739A CN 103459988 B CN103459988 B CN 103459988B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention provides a kind of ultrasonic flow rate measurement device, possesses: measurement stream, is flow through this measurement stream by measurement fluid；And sensor installation housing (7), it has the peristome being formed at measurement stream and the sensor mounting recess (10,11) connected with peristome.It addition, possess: a pair ultrasonic sensor, it is arranged in sensor mounting recess (10,11), for measuring by the flow velocity of measurement fluid；And flow measurement portion, it detects flow according to the propagation time of the ultrasound wave between a pair ultrasonic sensor.It is also equipped with suppressing body (20), this suppression body (20) is arranged at peristome, for suppression by measurement fluid flow sensor mounting recess (10,11), wherein, suppression body (20) and sensor installation housing (7) are formed integrally.
Description
Technical field
The present invention relates to the ultrasonic flow rate measurement device of a kind of flow measuring gas etc..
Background technology
Conventional ultrasonic flow rate measurement device is described.
Figure 14 is the figure of the cross section structure representing conventional ultrasonic flow rate measurement device 100.
As shown in figure 14, ultrasonic flow rate measurement device 100 possess by measurement fluid from side to opposite side
The flow tube 121 of flowing.It addition, with clamping flow tube 121 and opposite and relative in
Heart line tilts the mode of predetermined angular, arranges ultrasonic sensor 122a at upstream side, arranges in downstream
Ultrasonic sensor 122b.
Ultrasonic sensor 122a, 122b be arranged in be arranged at flow tube 121 recess 125a,
125b.Be provided with in the inner space of recess 125a, 125b big block ultrasound wave through component 123a,
123b, prevents being measured fluid and enters recess 125a, 125b and carry out flow measurement (for example, referring to patent
Document 1).
It addition, Figure 15 is the cross section structure of other example representing conventional ultrasonic flow rate measurement device 150
Figure.As shown in figure 15, ultrasonic flow rate measurement device 150 also possesses and is mounted with ultrasonic sensor
Recess 125a, 125b of 122a, 122b.Ultrasonic wave direction stream in recess 125a, 125b spreads out of
Be configured with at peristome suppression component 124a, 124b, this suppression component 124a, 124b for restriction by based on
Fluid measured flow sensor side (for example, referring to patent documentation 2).
But, in above-mentioned conventional structure, it is provided with ultrasound wave through component 123a, 123b, suppression
Component 124a, 124b are flowed into recess 125a, 125b with suppression by measurement fluid.Thus, by measurement fluid
Sinuous flow at the measurement unit (propagation path of ultrasound wave) and recess 125a, 125b of flow tube 121
Diminishing, the deterioration of measurement precision reduces.But, due to other component of needs, therefore exist due to material
Expense, man-hour increase and this problem of cost increase.
Further, owing in ultrasonic sensor 122a, 122b, the reception level of ultrasound wave declines, therefore deposit
This problem is inputted in the driving being difficult to reduce ultrasonic sensor 122a, 122b.Therefore, as to city
Combustion gas, LPG (Liquefied petroleum gas: liquefied petroleum gas) this home-use combustion gas are counted
The gas meter, flow meter of amount is such, with a small amount of battery capacity persistently use such as 10 years this long-time time, also
Exist and be difficult to this problem of low electrification.
Patent documentation 1: Japanese Laid-Open Patent Publication 63-26537 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2004-101542 publication
Summary of the invention
The present invention is to complete in view of above-mentioned conventional problem, it is provided that a kind of suppression cost increase and reality
The stabilisation of existing certainty of measurement and the ultrasonic flow rate measurement device of low electrification.
The ultrasonic flow rate measurement device of the present invention possesses: measurement stream, is flow through this measurement by measurement fluid
Stream；And sensor installs housing, it has the peristome and with peristome even being formed at measurement stream
Logical sensor mounting recess.It addition, possess: a pair ultrasonic sensor, it is arranged in sensor peace
Dress recess, for measuring by the flow velocity of measurement fluid；And flow measurement portion, it is according to a pair ultrasound wave
The propagation time of the ultrasound wave between sensor detects flow.Further, it is also equipped with suppressing body, this suppression body
Be arranged at peristome, for suppression by measurement fluid flow sensor mounting recess, wherein, suppression body with
It is formed integrally that housing installed by sensor.
According to this structure, when housing installed by molding sensor for limiting flow sensor mounting recess
The yet simultaneously molding of suppression body, does not the most exist and arranges other component and cost increase, the increase of installation work-hour,
Suppress the confusion by measurement fluid produced at sensor mounting recess, it is possible to realize stablizing of certainty of measurement
Change and low electrification.
Accompanying drawing explanation
Fig. 1 is the cross section of the structure representing the ultrasonic flow rate measurement device in embodiments of the present invention
Figure.
Fig. 2 is the sectional view of the flow measurement unit in embodiments of the present invention.
Fig. 3 is the flow measurement action utilizing ultrasound wave to carry out for illustrating in embodiments of the present invention
Figure.
Fig. 4 is the exploded perspective view of the structure representing the flow measurement unit in embodiments of the present invention.
Fig. 5 is to represent the mould that sensor installation housing is shaped processing in embodiments of the present invention
The axonometric chart of the structure of tool.
Fig. 6 is to represent that the peristome in ultrasonic propagation portion in embodiments of the present invention does not exist suppression
The figure of the fluid analysis result of the flowing by measurement fluid in the case of body.
Fig. 7 is the axonometric chart of the structure of the sliding mould in the first embodiment representing the present invention.
Fig. 8 is the solid that the structure of housing installed by the sensor in the first embodiment representing the present invention
Figure.
Fig. 9 is the pass that the sensor in the first embodiment representing the present invention installs housing and sliding mould
The figure of system.
Figure 10 is the fluid analysis of the effect illustrating suppression body in the first embodiment representing the present invention
The figure of result.
Figure 11 is the axonometric chart of the structure representing the sliding mould in second embodiment of the present invention.
Figure 12 is the solid of the structure representing that housing installed by the sensor in second embodiment of the present invention
Figure.
Figure 13 is the ultrasonic flow rate measurement device representing other example in second embodiment of the present invention
The figure of cross section structure.
Figure 14 is the figure of the cross section structure representing conventional ultrasonic flow rate measurement device.
Figure 15 is the figure of the cross section structure of other example representing conventional ultrasonic flow rate measurement device.
Detailed description of the invention
Below, it is described with reference to embodiments of the present invention.Additionally, the present invention is not limited to these in fact
Execute mode.
(the first embodiment)
Fig. 1 is the cross section of the structure representing the ultrasonic flow rate measurement device 50 in embodiments of the present invention
Figure.The hollow arrow of Fig. 1 represents the flowing of fluid (by measurement fluid).
As it is shown in figure 1, ultrasonic flow rate measurement device 50 possesses fluid delivery path 3.Fluid delivery path
3 have stop valve 4 in the way of stream, and this stop valve 4 comprises drive division 4a and collaborative with drive division 4a
Valve body 4b, is opened and closed by valve body 4b, and wherein, this drive division 4a comprises the electricity such as stepping motor
Magnetic device.When stop valve 4 is opened, flowed out to measurement by measurement fluid from fluid delivery path 3
Instrument housing 2 is internal.Ultrasonic flow rate measurement device 50 possess flow through by measurement fluid measurement stream 1.Meter
Flow measurement road 1 is configured to the rectangle that cross section is rectangle etc..Be full of measuring instrument housing 2 internal measured fluid
It is flowed into measurement stream 1 from the entrance side 1a of measurement stream 1, and via being connected with side 1b downstream
Fluid outflow path 6 is to the outside outflow of measuring instrument housing 2.
Additionally, stop valve 4 is set as when fluid flowing exists abnormal, by surveying the inspections such as shake device (not shown)
Close when measuring earthquake etc..When stop valve 4 cuts out, do not supplied road from fluid by measurement fluid
It is internal that footpath 3 flows out to measuring instrument housing 2.
Ultrasonic flow rate measurement device 50 possesses flow measurement unit 26.Fig. 2 is embodiments of the present invention
In the sectional view of flow measurement unit 26.
In the case of the cross section of measurement stream 1 is rectangle, such as its short brink connects sensor and installs
Housing 7.At sensor, housing 7 is installed, constitutes a pair ultrasonic sensor 8,9 configuration in flow rate detection portion
Become to make ultrasound wave send in the way of opposite wall 52 reflection and receive ultrasound wave.Ultrasonic sensor 8,
9 are arranged in the sensor mounting recess 10,11 being obliquely installed relative to measurement stream 1.At supersonic sensing
Carried out by the peristome 12,13 being formed at measurement stream 1 of sensor installation housing 7 between device 8,9
The propagation of the ultrasound wave in measurement stream 1.Peristome 12,13 is provided with suppression body 20 (with reference to Fig. 8),
This suppression body 20 suppresses to be measured fluid flow sensor mounting recess 10,11.Suppression is described below
The structure of body 20, effect, it is one-body molded that housing 7 installed by suppression body 20 and sensor.Sensor is installed recessed
Portion 10,11 connects with peristome 12,13.
Additionally, the configuration of a pair ultrasonic sensor 8,9 is not limited to above-mentioned example.As long as ultrasound wave passes
Sensor 8,9 is arranged on the same side of measurement stream 1, composition make use of the reflection at the wall of opposite side
Ultrasonic wave propagation path.Thus, measurement stream 1 is capable of miniaturization.
When being carried out the propagation of the driving of ultrasonic sensor 8,9, ultrasound wave by control portion 5 (with reference to Fig. 1)
Between measurement and the detection of flow, further when exception drive stop valve 4.
Then, effusion meter that employ ultrasonic flow rate measurement device 50, that utilize ultrasound wave to carry out is described
Survey action.Fig. 3 is the flow measurement utilizing ultrasound wave to carry out for illustrating in embodiments of the present invention
The figure of action.
In the present embodiment, in order to make the blocking of a pair ultrasonic sensor 8,9, at measurement stream 1
Square-section the same face on be configured with ultrasonic sensor 8,9.
Therefore, send and receive the propagation path of ultrasound wave and become the biography of the V-shape in opposite wall 52 reflection
Broadcast path, send and receive between a pair ultrasonic sensor 8,9 being arranged in upstream side and downstream
Ultrasound wave.
In such an embodiment, to the ultrasound wave sent from the ultrasonic sensor 8 of upstream side by downstream
Propagation time T1 till ultrasonic sensor 9 receives measures.On the other hand, to side downstream
The ultrasound wave that ultrasonic sensor 9 sends received by the ultrasonic sensor 8 of upstream side till propagation time
Between T2 measure.
According to so measuring propagation time T1 and T2 obtained, by following arithmetic expression, by as effusion meter
The operational part in the control portion 5 of survey portion function carrys out calculated flow rate.Flow measurement portion is according to a pair ultrasound wave
The propagation time of the ultrasound wave between sensor 8,9 is detected by the flow of measurement fluid.
The flow velocity by measurement fluid of the flow direction of measurement stream 1 is set to V.It addition, as it is shown on figure 3,
When the angle that the flow direction of measurement stream 1 and ultrasonic wave propagation path are formed is set to θ, by ultrasound wave
The distance of the ultrasonic wave propagation path between sensor 8,9 is set to 2 × L, the velocity of sound of measured fluid is set
During for C, by being calculated as follows flow velocity V.
T1=2 × L/ (C+Vcos θ) formula (1)
T2=2 × L/ (C-Vcos θ) formula (2)
In formula (1) and formula (2), the formula reciprocal of T2 eliminates velocity of sound C by deducting from the inverse of T1 and obtain
To formula (3).
V=(2 × L/2cos θ) ((1/T1)-(1/T2)) formula (3)
Here, angle, θ and distance L are known, therefore can count according to the value of propagation time T1 and T2
Calculate flow velocity V.Consider measure air mass flow situation, when be assumed to be angle, θ=45 degree, distance L=35mm,
When velocity of sound C=340m/s, flow velocity V=8m/s, for T1=2.0 × 10-4Second, T2=2.1 × 10-4Second, from
And it is capable of instantaneous measurement.
Additionally, the ultrasonic wave propagation path between ultrasonic sensor 8,9 is not limited to as described above
The propagation path of V-shape.Such as, even the propagation path of structure in addition, if crosscutting
The biography that measurement stream 1 is above at least one times and the propagation time of ultrasound wave changes due to change in flow
Broadcast path, it is also possible to measurement flow velocity.
Then, illustrate that the forming method of housing 7 installed by the sensor in embodiments of the present invention.
Fig. 4 is the exploded perspective of the structure representing the flow measurement unit 26 in embodiments of the present invention
Figure.
As shown in Figure 4, flow measurement unit 26 is become with measurement stream 1 the two by sensor installation housing 7
Type parts are constituted.
Fig. 5 is to represent that the housing 7 of installing sensor in embodiments of the present invention is shaped processing
The axonometric chart of the structure of mould.
As it is shown in figure 5, sensor is installed housing 7 be shaped the mould of processing by upper mold 14 and lower mold 15
Constitute.Being formed with sliding mould 16,17 in upper mold 14, this sliding mould 16,17 is used for pacifying for formation
The recess of dress ultrasonic sensor 8,9.Sensor mounting recess 10,11 and peristome 12,13 are by sliding
Moving mold 16,17 molding.
Here, the ultrasonic flow rate measurement device with suppression body 20 in explanation embodiments of the present invention
The effect of 50 and effect.
Fig. 6 is to represent that the peristome 12 in ultrasonic propagation portion in embodiments of the present invention does not exist to press down
The figure of the fluid analysis result of the flowing by measurement fluid in the case of body processed.
As shown in Figure 6, in the sensor peace as the space between ultrasonic sensor 8 and measurement stream 1
Dress recess 10 produces big eddy current.When ultrasound wave is propagated in this part, ultrasound wave becomes due to this eddy current
Obtaining chaotic, the propagation time therefore measured produces error, it is difficult to correctly measure by measurement stream 1
Flow.
In the past, in order to make the part of sensor mounting recess 10 do not produce by measurement fluid flowing, from
The opening portion that the part of sensor mounting recess 10 connects to measurement stream 1 is additionally provided with metal gauze
Deng suppression component.But, in the method, need the suppression component being made up of other component is installed, because of
This is strongly required to be avoided this situation as far as possible from the viewpoint of cutting down cost and cutting down installation work-hour.
The processing method using molding makes the sensor in embodiments of the present invention and installs housing 7.
Now, this auxiliary by being inserted into sliding mould 16,17 at the mould for molding sensor mounting body
Help mould, it is also possible to processing integratedly is for installing the part of the sensor mounting recess 10,11 of sensor.
Fig. 7 is the axonometric chart of the structure of the sliding mould 16,17 in the first embodiment representing the present invention.
It addition, Fig. 8 is the solid that the structure of housing 7 installed by the sensor in the first embodiment representing the present invention
Figure.
As it is shown in fig. 7, the fore-end at sliding mould 16,17 has for abutting with lower mold 15 with shape
Become the par 18 of peristome 12,13.Par 18 is by the measurement stream 1 with contact openings portion 12,13
Wall formed conplane plane constitute.Thus, make the wall of measurement stream 1 and peristome 12,
Suppression body 20 integration of 13, it is possible to make the flowing in measurement stream 1 smooth and easy, it is possible to carry out stable stream
Gauge is surveyed.
It addition, in par 18, with the straight line vertical with the flowing by measurement fluid in measurement stream 1
Shape forms multiple groove 19.It addition, the depth direction of groove 19 is configured to and a pair ultrasonic sensor 8,9
The direction that ultrasonic wave radiation face is vertical.Suppression body 20 is by being arranged at the fore-end of sliding mould 16,17
Groove 19 formed.
Thus, as shown in Figure 8, when housing 7 molding installed by sensor, the structural material of housing is flowed into
Groove 19, it is possible to form for limiting by measurement fluid in the part of sensor mounting recess 10
The suppression body 20 flowed into.It addition, do one's utmost to suppress by the inflow of measurement fluid, and can reduce to ultrasonic
The impact that the decay that ripple is propagated brings.
Fig. 9 be sensor in the first embodiment representing the present invention install housing 7 and sliding mould 16,
The figure of the relation of 17.Fig. 9 represents that the sensor shown in Fig. 8 installs cross section structure and the sliding mould of housing 7
16, the relation of the side view of 17.As it is shown in figure 9, by sliding mould 16,17 molding, it is possible to
The position composition corresponding with the groove 19 being arranged at sliding mould 16,17 installing housing 7 at sensor presses down
Body 20 processed.
Figure 10 is that the fluid of the effect illustrating suppression body 20 in the first embodiment representing the present invention divides
The figure of analysis result.
As shown in Figure 10, with shown in Fig. 6 not peristome 12 arrange suppression body 20 state compared with,
The sensor mounting recess 10 of ultrasonic sensor 8 produces the sinuous flows such as eddy current reduce.Additionally, this suppression
In the sensor mounting recess 11 acting on ultrasonic sensor 9 of body 20 the most identical.
As it has been described above, in the present embodiment, when making the mould that housing 7 installed by sensor, only exist
Sliding mould 16,17 formed groove shape just can suppress to be measured fluid flow sensor mounting recess 10,
The part of 11, it is possible to increase certainty of measurement.It addition, need other component unlike the past, therefore can
Enough realize material cost to reduce and minimizing in man-hour.
(the second embodiment)
Figure 11 is the axonometric chart of the structure representing the sliding mould 32 in second embodiment of the present invention.Figure
12 is the axonometric chart of the structure representing that housing 7 installed by the sensor in second embodiment of the present invention.
Ultrasonic flow rate measurement device 50 in present embodiment, the structure of mould are except sliding mould 32
Beyond structure identical with the first embodiment, therefore the description thereof will be omitted.
In the present embodiment, fore-end at sliding mould 32 is formed cancellate as shown in figure 11
Groove 33.Groove 33 is formed on the direction vertical with the flowing measuring in stream 1, the depth direction structure of groove 33
Become vertical with the ultrasonic wave radiation face of a pair ultrasonic sensor 8,9.Make after molding cancellate presses down
The opening direction of body 34 processed is vertical with the transmission face of ultrasonic sensor 8,9, thus at peristome 12,13
The sinuous flows such as the eddy current produced disperse less, it is possible to more preferably performance ground limits by the inflow of measurement fluid.
Use this sliding mould 32, by the method molding sensor mounting shell identical with the first embodiment
Body 7.Thereby, it is possible to Figure 12 to be illustrated such cancellate suppression body 34 installs housing 7 one with sensor
Body ground is formed, it is possible to that is suppressed sensor mounting recess 10,11 part further is measured fluid
Chaotic effect.
In the case of additionally needing the inflow suppression components such as metal gauze like that, measure stream 1 He in the past
Housing 7 both parts structure installed by sensor is necessary.But, using described in each embodiment
In the case of bright processing and forming, it is not necessary to other suppression component is set, therefore can also realize sensing
Device is installed housing 7 and measures being integrally machined of stream 1.I.e. it is capable of be integrally formed sensor peace
Dress housing 7 and measurement stream 1.Therefore, it is achieved the further minimizing of installation work-hour, it is possible to realize cost fall
Low, and owing to being processed integratedly, the most do not exist and the accuracy error caused is installed, it is possible to
Realize the measurement of higher precision.
Further, it is contemplated that owing to the structure of measurement stream 1 is different, the detailed specification of said structure produces change
Situation.Therefore, the present invention is not limited to above-mentioned embodiment.
Figure 13 is the ultrasonic flow rate measurement device representing other example in second embodiment of the present invention
The figure of the cross section structure of 54.
As shown in figure 13, ultrasonic flow rate measurement device 54 possess by measurement fluid from side to opposite side stream
Dynamic flow tube 21 (measurement stream).It addition, with clamping flow tube 21 and opposite and phase
For the mode of centerline dip predetermined angular, ultrasonic sensor 22a is set at upstream side, in downstream
Side arranges ultrasonic sensor 22b.
Ultrasonic sensor 22a, 22b are arranged in recess (the sensor installation being arranged at flow tube 21
Recess) 25a, 25b.The peristome contacted with flow tube 21 at this recess 25a, 25b, additionally it is possible to
Above-mentioned suppression body 20,34 is integrally formed with flow tube 21.Thus, prevent from being measured fluid to enter
Enter recess 25a, 25b, it is possible to carry out high-precision flow measurement.
As it has been described above, according to the ultrasonic flow rate measurement device of present embodiment, suppression is measured fluid
The suppression body of flow sensor mounting recess concurrently forms with housing when processing and forming.Therefore, it is possible to it is real
The most stable measurement performance, cost degradation and miniaturization.It addition, with use the conventional of metal gauze etc.
Suppression component compare, it is possible to the aperture opening ratio of peristome is configured greatly.Therefore, when ultrasound wave passes through not
Easily become obstruction, be also not easy to produce sensitivity decrease when sending and receive ultrasound wave.Therefore, it is possible to
Reduce the driving input of ultrasonic sensor, it is possible to realize low electrification.
Industrial applicability
According to the present invention, as described above, it is possible to play suppression cost increase and realize the steady of certainty of measurement
Fixedization and this significant effect of low electrification.Accordingly, as with gas meter, flow meter as representative to various fluids
The flow ultrasonic flow rate measurement device etc. that carries out measuring be useful.
Description of reference numerals
1: measurement stream；1a: entrance side；1b: downstream；2: measuring instrument housing；3: fluid supplies
To path；4: stop valve；4a: drive division；4b: valve body；5: control portion；6: fluid flows out road
Footpath；7: housing installed by sensor；8,9,22a, 22b: ultrasonic sensor；10,11: sensing
Device mounting recess；12,13: peristome；14: upper mold；15: lower mold；16,17,32: sliding die
Tool；19,33: groove；20,34: suppression body；21: flow tube；25a, 25b: recess；26:
Flow measurement unit；50,54: ultrasonic flow rate measurement device；52: opposite wall.
Claims (4)
1. a ultrasonic flow rate measurement device, possesses:
Measurement stream, is flow through this measurement stream by measurement fluid；
Sensor install housing, its have be formed at above-mentioned measurement stream peristome and with above-mentioned peristome
The sensor mounting recess of connection；
A pair ultrasonic sensor, it is arranged in the sensor mounting recess, by measure above-mentioned by based on
The flow velocity of fluid measured；
Flow measurement portion, it was examined according to the propagation time of the ultrasound wave between above-mentioned a pair ultrasonic sensor
Measurement of discharge；And
Suppression body, it is arranged at above-mentioned peristome, is used for suppressing above-mentioned and is flowed into above-mentioned sensing by measurement fluid
Device mounting recess,
Wherein, the sensor mounting recess and the molding by sliding mould of above-mentioned peristome, above-mentioned press down
Body processed by be arranged at the fore-end of above-mentioned sliding mould, depth direction passes with above-mentioned a pair ultrasound wave
The ultrasonic wave radiation face of sensor is vertical and is upwardly formed in the side vertical with the flowing in above-mentioned measurement stream
It is formed integrally with the sensor installation housing for multiple grooves of linearity,
Fore-end at above-mentioned sliding mould has and the above-mentioned measurement stream contacting above-mentioned peristome
Wall forms conplane plane.
Ultrasonic flow rate measurement device the most according to claim 1, it is characterised in that
The sensor installs housing and above-mentioned measurement stream is integrally formed.
Ultrasonic flow rate measurement device the most according to claim 1, it is characterised in that
Above-mentioned a pair ultrasonic sensor is arranged on the same side of above-mentioned measurement stream, constitutes and make use of phase
The ultrasonic wave propagation path of the reflection at the wall of offside.
Ultrasonic flow rate measurement device the most according to claim 1, it is characterised in that
The groove of the front end of above-mentioned sliding mould is additional multiple on the flow direction in above-mentioned measurement stream
The groove of linearity and the clathrate that obtains.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011083297 | 2011-04-05 | ||
| JP2011-083297 | 2011-04-05 | ||
| PCT/JP2012/002334 WO2012137489A1 (en) | 2011-04-05 | 2012-04-04 | Ultrasonic flow rate measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103459988A CN103459988A (en) | 2013-12-18 |
| CN103459988B true CN103459988B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280016739.0A Active CN103459988B (en) | 2011-04-05 | 2012-04-04 | Ultrasonic flow rate measurement device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9372105B2 (en) |
| EP (1) | EP2696174A4 (en) |
| JP (1) | JPWO2012137489A1 (en) |
| CN (1) | CN103459988B (en) |
| WO (1) | WO2012137489A1 (en) |
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| JP2019196968A (en) * | 2018-05-09 | 2019-11-14 | アズビル金門株式会社 | Ultrasonic flowmeter |
| JPWO2019235291A1 (en) * | 2018-06-08 | 2021-06-17 | パナソニックＩｐマネジメント株式会社 | Gas security device |
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-
2012
- 2012-04-04 CN CN201280016739.0A patent/CN103459988B/en active Active
- 2012-04-04 US US13/984,633 patent/US9372105B2/en active Active
- 2012-04-04 EP EP12767854.8A patent/EP2696174A4/en not_active Withdrawn
- 2012-04-04 WO PCT/JP2012/002334 patent/WO2012137489A1/en active Application Filing
- 2012-04-04 JP JP2013508766A patent/JPWO2012137489A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20130312537A1 (en) | 2013-11-28 |
| US9372105B2 (en) | 2016-06-21 |
| JPWO2012137489A1 (en) | 2014-07-28 |
| EP2696174A4 (en) | 2014-08-27 |
| EP2696174A1 (en) | 2014-02-12 |
| WO2012137489A1 (en) | 2012-10-11 |
| CN103459988A (en) | 2013-12-18 |
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